Now in private beta Open-weight · self-hosted

Make a song.
Or build the engine that makes it.

kouano · new song Quick tier

✨

🎹 Lo-fi 🪩 Disco 🎻 Orchestral 🎧 EDM 2 takes in ~8s

🎚️ 48kHz stereo· ⚡ Under 10 seconds· 🌍 50+ languages· ⬇️ Your downloads, your rights

<10s

to a finished, mastered song

2 takes

every time — we keep the best

50+

languages supported

4 min

max song length

How it works

Idea in. Two songs out.

✍️

STEP 01

Prompt & lyrics

Describe a vibe, pick genres, drop in lyrics — or let Kouano write them for you.

⚡

STEP 02

Two variants in seconds

We generate two full takes, run a quality gate, and quietly discard the weak one.

🎧

STEP 03

Play · edit · download

Extend, regenerate a section, split stems, then export clean MP3/WAV. Yours to keep.

See it work

From a prompt to two finished takes

Real, playable audio — hit play on either take. We already ran the quality gate and kept the good ones.

Kouano · Create

YOUR PROMPT

Dreamy synthwave for a midnight drive — airy female vocals, warm analog pads, steady 4-on-the-floor.

🌆 Synthwave Dreamy 2:30

⚡ Quick 🎛️ Studio

✓ Quality gate passed · a weaker 3rd take was discarded

Take 1KEPT

Synthwave · Quick

0:00/2:48

Take 2KEPT

Synthwave · Quick

0:00/2:56

For creators

Everything you need to finish the song

✍️

Write my lyrics

Stuck? Kouano drafts lyrics that fit your vibe, structure, and language.

➕

Extend

Love where it ends? Keep it going — add another verse, chorus, or outro.

🔁

Regenerate a section

Only the chorus feels off? Reroll just that part — non-destructively.

🎙️

Instrumental / vocals

Flip between the full mix and an instrumental in one tap.

STUDIO

🎚️

Stems

Export separated vocals, drums, bass, and more — ready for your DAW.

⬇️

Download & remix

Clean MP3/WAV exports you own, plus one-tap remix of any track.

For developers

The music-generation API the incumbents never shipped

Prompt in, mastered song out — over plain REST. Build the exact engine that powers our app into your product.

✓ Sync + async generation, with token streaming

✓ Separated stems & a per-track provenance record

✓ Self-host the open weights — private by default

✓ Clean, commercial-ready downloads

# prompt → mastered song over REST
curl https://api.kouano.ai/v1/songs \
  -H "Authorization: Bearer $KOUANO_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "dreamy synthwave, night drive",
    "tier": "quick",
    "duration": 150,
    "variants": 2,
    "format": "wav"
  }'

import { Kouano } from "kouano";
const kouano = new Kouano(process.env.KOUANO_KEY);

// best = the take that passed the quality gate
const { best, takes } = await kouano.songs.create({
  prompt: "dreamy synthwave, night drive",
  tier: "quick",
  variants: 2,
});

console.log(best.url, best.provenance.seed);

from kouano import Kouano
kouano = Kouano(api_key=os.environ["KOUANO_KEY"])

song = kouano.songs.create(
    prompt="dreamy synthwave, night drive",
    tier="quick",
    variants=2,
)
# reproducible: same seed → same song
print(song.best.url, song.best.provenance.seed)

Why Kouano

We compete where we actually win

⚡

Speed

A finished, mastered song in under ten seconds.

⬇️

Ownership

Clean MP3/WAV downloads and stems — no locked buttons.

🔒

Privacy

Self-hosted, open weights. Your prompts aren't training data.

{ }

Real API

A documented, public REST API — not a private demo.

🧾

Provenance

Every track records its models, settings, and exact seed.

Capability	Kouano	Suno	Udio
Public generation API	✓	✗	✗
Clean downloads (MP3/WAV)	✓	Paid	Disabled
Separated stems	✓	Paid	Limited
Self-host / private / open weights	✓	✗	✗
Provenance record (seed-reproducible)	✓	~	~

Reflects publicly available information at time of writing; competitors evolve. We compare only on axes we can substantiate — not on vocal realism.

Pricing

Start free. Scale when you're ready.

Free

Kick the tires

✓ 10 songs / month

✓ Quick tier

✓ MP3 downloads

✓ Provenance on every track

Built to be trusted

🧾

Provenance on every track

Models, settings, and a reproducible seed — auditable.

🔒

Prompts stay private

Not harvested to train models. Ever.

🖥️

Runs on our own GPUs

Or yours — self-host the open weights.

💧

Watermarked output

Inaudible provenance mark for transparency.

🤝

Consent-first

No unconsented voice cloning — full stop.

Questions, answered honestly

Make something. Or build the thing that makes it.

Two finished songs in seconds — free to start. A real API when you're ready to build.

Let's make a song 🎵

Describe a vibe — we'll hand back two finished, mastered takes.

✨Your prompt

Not sure where to start? Try one:

Genres & style pick a few

Mood

Length{{ durationLabel }}

0:30up to 4:00

Tier

Seed — same seed reproduces the song

Inference steps{{ steps }}

Guidance{{ guidanceLabel }}

~{{ creditCost }} credits · {{ tierLabel }} · 2 takes

Two takes at once — we run a quality gate and keep the good ones.

✓ Both takes passed — discarding a weaker third

Prompt: {{ promptRecap }}

✓ We kept your 2 best takes — a weaker third was auto-discarded by the quality gate.

{{ songGenre }}·{{ songTier }} tier·Generated just now

Take 1KEPT

0:00 / 2:48

Take 2KEPT

0:00 / 2:56

Editing {{ selTake }} · pick a take above, then tweak or export

STUDIO

{{ songGenre }} · non-destructive editor · autosaved

Full mix

0:00 / 2:52

Editing: {{ selSectionName }} {{ selSectionRange }}

🧾 How this was made

Model{{ edModel }}

Seed{{ edSeed }}

Tempo{{ edTempo }} BPM

Key{{ edKey }}

Format48kHz stereo

Quality gatepassed

💧 Watermarked · you own this output · commercial-ready

Version history

Nothing is overwritten — restore any version.

CURRENT

Design system

The Kouano system

One coherent language across marketing, the creator app, and the developer surface — same tokens, different density. Bright & playful, tuned to stay credible for developers and pass WCAG AA.

Color

Spectrum

linear-gradient(115deg, #FF6B4A → #FF3D9A → #8B5CF6 → #2D7FF9)

The signature gradient. Wordmark, primary buttons, active waveforms, key fills. Never behind body text.

Coral

#FF6B4A

Magenta

#FF3D9A

Violet

#8B5CF6

Electric Blue

#2D7FF9

Lime pop

#C6F24E

Canvas

#FBF9F5

Ink

#171423

Muted

#6B6478

Dark canvas

#141019

Success

#2E9E6B

Typography

DISPLAY · ui-rounded

Make a song in seconds

Headlines, hero, numbers. Weights 700–800.

BODY · system sans

Type an idea and get two finished, mastered songs back — playable, editable, and yours to download.

mono · 48kHz · <10s · seed 20260714

Display / 40800 · -3% tracking

Heading / 30750

Subhead / 22600

Body / 16 · reading400

Radius · shadow · motion

RADIUS

8 · 16 · 24 · pill

ELEVATION

rest · lift · glow

MOTION

spring · cubic-bezier(.34,1.56,.64,1)

150 / 250 / 400ms · respects reduced-motion

Components

BUTTONS

CHIPS & BADGES

🌆 Synthwave🎹 Lo-fiSTUDIOCOMING SOONBETA

TIER TOGGLE

⚡ Quick🎛️ Studio

INPUTS

WAVEFORM PLAYER · the hero component

Neon Afterglow

0:00 / 2:48 · plays real audio

CODE BLOCK

await kouano.songs.create({
  prompt: "lo-fi"
});

ALBUM-ART TILES

Design rationale

Why Kouano looks and works the way it does

A note from the founding product designer. This prototype goes deep on the spine of the product — the marketing page and the full Create → Generate → Result → Edit loop — on a cohesive, buildable system. Here's the reasoning, mapped to the goals.

Two audiences, one page

The landing leads with a dual hero — "Make a song. Or build the engine that makes it." — and a For creators / For developers toggle that reskins the sub-copy and swaps which CTA is emphasized, without splitting the page in two. Creators and developers share one visual system; the app just runs at a higher density than the marketing site. It never feels split-brained.

Time-to-first-song is sacred

The Create screen is a single prompt box, smart defaults, and a big Generate button. Power (seed, steps, guidance, Studio tier) is real but folded into Advanced, hidden by default. A 🎲 Surprise me and one-tap example prompts mean nobody stares at a blank page. You can generate without touching a single setting.

Two choices, always — and the gate is a feature

Every generation returns two takes, presented side by side so choosing feels fun rather than like work. The best-of-2 quality gate is surfaced as a positive — the generating screen narrates "comparing 2 takes," and the result opens with "we kept your 2 best; a weaker third was auto-discarded." A silent engineering detail becomes a trust-building moment.

Trust shows up at the decision points

Provenance (models, settings, reproducible seed), privacy, and ownership aren't buried in a legal page — they appear exactly where decisions happen: a "How this was made" popover on every result, a watermark note in the download sheet, and self-host/privacy language beside the developer CTA. Editing is non-destructive with visible version history, so experimenting never feels risky.

Honest by design

We compete only where we truly win — speed, openness, API access, privacy/self-hosting, and ownership — and the comparison table says so with a footnote, never a claim about vocal realism. Voice cloning, custom voices, and full inpainting are labeled Coming soon, never shown as live. Rights language stays careful: "commercial-ready" and "clean provenance," with a consent-first stance (no unconsented voice cloning; watermarked output).

Bright & playful, still credible

The Spectrum gradient, rounded display type, pill buttons, and springy motion make creativity feel touchable. Discipline keeps it credible: gradients live on large shapes and fills, never behind body text; ink sits on light or on solid accent to hold WCAG AA; motion is purposeful and fully honors prefers-reduced-motion. The app player and developer docs get a dark mode for long, focused sessions.

Goals → decisions

Fast time-to-songOne prompt + smart defaults, Surprise me, examples, advanced hidden.

Dual audienceDual hero + persona toggle, one system at two densities, on-brand dev surface.

TrustProvenance popover, privacy + ownership at download/generate, version history.

Playful, credibleSpectrum + motion, AA contrast discipline, reduced-motion, dark mode.

What's built here vs. next

✓ In this prototype

Landing / marketing pageCreate · Generating · Result · EditorTiers, best-of-2 gate, provenanceReal Web Audio players + editing loopDesign system + this rationaleLight + dark, responsive, AA-minded

→ Next passes

Library / My songs (grid, filters, folders)Developer dashboard (keys, usage, logs)API docs / quickstart referencePricing & billing / accountAuth + first-run onboardingPhase-2 (voice, inpainting) — coming soon

Make a song.Or build the engine that makes it.